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alpha/dma: use common noop dma ops
Some of the alpha pci noop dma ops are identical to the common ones. Use them. Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Reviewed-by: Joerg Roedel <jroedel@suse.de> Signed-off-by: Andy Lutomirski <luto@kernel.org> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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1 changed files with 4 additions and 42 deletions
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@ -123,44 +123,6 @@ static void *alpha_noop_alloc_coherent(struct device *dev, size_t size,
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return ret;
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return ret;
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}
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}
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static void alpha_noop_free_coherent(struct device *dev, size_t size,
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void *cpu_addr, dma_addr_t dma_addr,
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struct dma_attrs *attrs)
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{
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free_pages((unsigned long)cpu_addr, get_order(size));
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}
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static dma_addr_t alpha_noop_map_page(struct device *dev, struct page *page,
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unsigned long offset, size_t size,
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enum dma_data_direction dir,
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struct dma_attrs *attrs)
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{
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return page_to_pa(page) + offset;
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}
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static int alpha_noop_map_sg(struct device *dev, struct scatterlist *sgl, int nents,
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enum dma_data_direction dir, struct dma_attrs *attrs)
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{
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int i;
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struct scatterlist *sg;
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for_each_sg(sgl, sg, nents, i) {
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void *va;
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BUG_ON(!sg_page(sg));
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va = sg_virt(sg);
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sg_dma_address(sg) = (dma_addr_t)virt_to_phys(va);
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sg_dma_len(sg) = sg->length;
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}
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return nents;
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}
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static int alpha_noop_mapping_error(struct device *dev, dma_addr_t dma_addr)
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{
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return 0;
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}
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static int alpha_noop_supported(struct device *dev, u64 mask)
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static int alpha_noop_supported(struct device *dev, u64 mask)
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{
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{
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return mask < 0x00ffffffUL ? 0 : 1;
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return mask < 0x00ffffffUL ? 0 : 1;
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@ -168,10 +130,10 @@ static int alpha_noop_supported(struct device *dev, u64 mask)
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struct dma_map_ops alpha_noop_ops = {
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struct dma_map_ops alpha_noop_ops = {
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.alloc = alpha_noop_alloc_coherent,
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.alloc = alpha_noop_alloc_coherent,
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.free = alpha_noop_free_coherent,
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.free = dma_noop_free_coherent,
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.map_page = alpha_noop_map_page,
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.map_page = dma_noop_map_page,
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.map_sg = alpha_noop_map_sg,
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.map_sg = dma_noop_map_sg,
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.mapping_error = alpha_noop_mapping_error,
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.mapping_error = dma_noop_mapping_error,
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.dma_supported = alpha_noop_supported,
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.dma_supported = alpha_noop_supported,
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};
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};
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